Implement Monlet MVP stack and UI updates

agent/config.example.toml

@@ -1,9 +1,12 @@
-agent_id = "example-host-01"
 hostname = "example-host-01"
-mode = "hybrid"
 state_dir = "/var/lib/monlet-agent"
 
+[labels]
+env = "prod"
+role = "api"
+
 [server]
+enabled = true
 url = "http://127.0.0.1:8000"
 token = "replace-me"
 heartbeat_interval = "30s"
@@ -16,7 +19,8 @@ listen = "127.0.0.1:9465"
 [[checks]]
 id = "disk_root"
 name = "Root disk usage"
-command = ["/usr/local/lib/monlet/check_disk_root.sh"]
+command = '''
+/usr/local/lib/monlet/check_disk_root.sh
+'''
 interval = "60s"
 timeout = "10s"
-notification_owner = "server"